比特幣是第一個加密電子貨幣，隨著近幾年比特幣風靡全世界，比特幣的研究日益增長，但多聚焦在比特幣的特定領域。本研究利用全球最大的索引資料庫之一Scopus，以敘述性分析、網絡分析與文字採礦等方法探討在Scopus中所有比特幣相關研究之文獻分析，提供一個從各面向了解比特幣發展的脈絡。分析的研究結果顯示在2013年後研究數量有顯著的增長，國家發表數量以美國為主，主要研究的子領域為資訊科技領域，財務商管領域次之。在網絡分析中作者耦合(author coupling)的研究結果顯示經常合作的作者群，並觀察其作者群研究領域，提供往後研究者可針對特定作者群搜尋其關鍵文獻;共被引分析(co-citation)的研究結果顯示共被引之文獻在特定領域具備相似性質，以利往後研究者了解比特幣文獻脈絡及族群性;作者關鍵字耦合(co-occurrences word)和共現字(co-word)針對作者關鍵字(Author Keywords)與KeyWords Plus主要出現的字詞類別為比特幣技術面和比特幣資訊科技，主要在探討的關鍵字是技術面的議題。後續又針對摘要做文字採礦並以BITCOIN為主題，挖掘與主題具有高度相關的關鍵字，並且提供關鍵字之符合議題和文獻資料。了解作者關鍵字、KeyWords Plus與摘要所挖掘出現的字詞能更有延伸性的了解熱門關鍵字的範疇，亦可以提供後續研究者在查閱文獻時能從更多面向的搜尋。本研究目的是為了進一步了解比特幣各領域的關係和探討的議題，透過挖掘作者、研究、引用文獻與關鍵字之關係，整理出重要議題，並提供相關文獻，給予想要進入該新興領域的研究者能更有廣度來了解比特幣和掌握議題，也可以給予致力已久的研究者從不同的角度來檢視該特定領域的議題趨勢。

Bitcoin is the first electronic money that allows online payments without financial institution. To further understand how the academia investigated this emerging discipline, research papers with keyword bitcoin during 2011 to 2017 were collected from the Scopus database in this research. The objectives of this study are to provided different angles to understand the development of bitcoin research by using visual analytics, network analysis and text mining. From the results of visual analytics, the number of bitcoin researches started to grow after 2013. Analytics also indicate that the most productive country regarding bitcoin research was the U.S., and the most published research subfields was computer science. From the result of network analysis, bitcoin literature can be classified into three categories that include “bitcoin transaction and information security”, “bitcoin optimization” and “bitcoin network protocol”. The purpose of this study also focused on revealing the important topics which were transaction, currency, peer to peer, international, nature, innovation, economic in Bitcoin by assessing the correlation between Author Keywords, Keywords Plus and keywords. Through our study, scholars may find a more extensive point of view to understand the literature of bitcoin and develop research topics.

Abdi, H. e., & B´era, M. (2014). Correspondence Analysis.
Andrychowicz, M., Dziembowski, S., Malinowski, D., & Mazurek, L. (2014). Secure multiparty computations on bitcoin. Paper presented at the Proceedings - IEEE Symposium on Security and Privacy, 59(4), 76-84.
Böhme, R., Nicolas Christin, Benjamin Edelman, & Moore, T. (2015). Bitcoin: Economics, Technology, and Governance. Economic Perspectives, 29(2), 213-238.
Barber, S., Boyen, X., Shi, E., & Uzun, E. (2012). Bitter to Better — How to Make Bitcoin a Better Currency. Paper presented at the Financial Cryptography and Data Security, 7397, 399-414.
Bariviera, A. F., Basgall, M. J., Hasperué, W., & Naiouf, M. (2017). Some stylized facts of the Bitcoin market. Physica A: Statistical Mechanics and its Applications, 484, 82-90.
Barratt, M.J.abcEmail Author, Lenton, S. b., Maddox, A. b., & Allen, M. d. (2016). ‘What if you live on top of a bakery and you like cakes?’—Drug use and harm trajectories before, during and after the emergence of Silk Road. International Journal of Drug Policy, 35, 50-57.
Beck, R., Stenum Czepluch, J., Lollike, N., & Malone, S. (2016). Blockchain - The gateway to trust-free cryptographic transactions. Paper presented at the 24th European Conference on Information Systems, ECIS 2016.
Benger, N., Pol, J. v. d., Smart, N. P., & Yarom, Y. (2014). “Ooh Aah... Just a Little Bit” : A small amount of side channel can go a long way. Lecture Notes in Computer Science, 8731, 75-92.
Bentov, I., & Kumaresan, R. (2014a). How to use Bitcoin to design fair protocols. Paper presented at the Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 8617,421-439.
Bentov, I., & Kumaresan, R. (2014b). How to use Bitcoin to design fair protocols. Lecture Notes in Computer Science, 8617, 421-439.
Bjerg, O. (2016). How is Bitcoin Money? Theory, Culture & Society, 33(1), 53-72.
Bonneau, J., Miller, A., Clark, J., Narayanan, A., Kroll, J. A., & Felten, E. W. (2015). SoK: Research perspectives and challenges for bitcoin and cryptocurrencies. Paper presented at the Proceedings - IEEE Symposium on Security and Privacy, 17,104-121.
Boyacka, K. W., & Klavansb, R. (2010). Co-citation analysis, bibliographic coupling, and direct citation: Which citation approach represents the research front most accurately? the American Society for Information Science and Technology, 61(12), 2389-2404.
Burge, M. E. (2016). Apple pay, bitcoin, and consumers: The ABCs of future public payments law. Hastings Law Journal, 67(6), 1493-1550.
Christin, N. (2013). Traveling the Silk Road: A measurement analysis of a large anonymous online marketplace, 213-223.
Christin, N. (2013). Traveling the Silk Road: A measurement analysis of a large anonymous online marketplace. Paper presented at the WWW 2013 - Proceedings of the 22nd International Conference on World Wide Web, 213-223.
Clark, J., & Essex, A. (2012). CommitCoin: Carbon Dating Commitments with Bitcoin. Lecture Notes in Computer Science, 7397 LNCS, 390-398.
Daulay, R. S. A., Nasution, S. M., & Paryasto, M. W. (2017). Realization and Addressing Analysis in Blockchain Bitcoin. Paper presented at the IOP Conference Series: Materials Science and Engineering, 260(1).
Decker, C., & Wattenhofer, R. (2013). Information propagation in the Bitcoin network. Paper presented at the 13th IEEE International Conference on Peer-to-Peer Computing, IEEE P2P 2013 - Proceedings.
Dyhrberg, A. H. (2016). Bitcoin, gold and the dollar - A GARCH volatility analysis. Finance Research Letters, 16, 85-92.
Eli Ben-Sasson , A. C., Christina Garman , Matthew Green , Ian Miers , Eran Tromer , Madars Virza. (2014). Zerocash: Decentralized Anonymous Payments from Bitcoin. IEEE Symposium on Security and Privacy, 459-474.
England, C., & Fratrik, C. (2018). Where to bitcoin? Journal of Private Enterprise, 33(1), 9-30.
Eyal, I., & Sirer, E. G. (2014a). Majority is not enough: Bitcoin mining is vulnerable. Paper presented at the Lecture Notes in Computer Science, 8437, 436-454.
Eyal, I., & Sirer, E. G. (2014b). Majority is not enough: Bitcoin mining is vulnerable. Lecture Notes in Computer Science, 8437, 436-454.
Feld, S., Schönfeld, M., & Werner, M. (2014). Analyzing the deployment of bitcoin's P2P network under an as-level perspective. Paper presented at the Procedia Computer Science, 197-223.
Garcia, D., Tessone, C. J., Mavrodiev, P., & Perony, N. (2014). The digital traces of bubbles: Feedback cycles between socio-economic signals in the Bitcoin economy. Royal Society Interface, 11(99).
Gordon, D., & Katz, J. (2010). Partial Fairness in Secure Two-Party Computation. Journal of Cryptology, 25(1), 14-40.
Ian Miers, C. G., Matthew Green, Aviel D. Rubin. (2013). Zerocoin: Anonymous Distributed E-Cash from Bitcoin. IEEE Symposium on Security and Privacy, 397-411.
J, W. (2015). The New Darwinism of the Payment System: Will Bitcoin Replace our Cash-based Society? Journal of Internet Banking and Commerce. doi:10.4172/1204-5357.S2-002
Karame, G. O., Androulaki, E., Roeschlin, M., Gervais, A., & Čapkun, S. (2015). Misbehavior in Bitcoin: A study of double-spending and accountability. Association for Computing Machinery, 18(1).
Khalil, R., & Gervais, A. (2017). Revive: Rebalancing Off-Blockchain payment networks. Paper presented at the Proceedings of the ACM Conference on Computer and Communications Security, 439-453.
Kim, Y. B., Lee, J., Park, N., Choo, J., Kim, J.-H., & Kim, C. H. (2017). When Bitcoin encounters information in an online forum: Using text mining to analyse user opinions and predict value fluctuation. PLoS ONE, 12(5).
Kraft, D. (2016). Difficulty control for blockchain-based consensus systems. Peer-to-Peer Networking and Applications, 9(2), 397-413.
Kristoufek, L. (2013). BitCoin meets Google Trends and Wikipedia: Quantifying the relationship between phenomena of the Internet era. Scientific Reports, 3.
Kristoufek, L. (2015). What are the main drivers of the bitcoin price? Evidence from wavelet coherence analysis. PLoS ONE, 10(4).
Luu, L., Chu, D.-H., Olickel, H., Saxena, P., & Hobor, A. (2016). Making smart contracts smarter. Paper presented at the Proceedings of the ACM Conference on Computer and Communications Security, 254-269.
Maurer, B., Nelms, T. C., & Swartz, L. (2013). “When perhaps the real problem is money itself!”: the practical materiality of Bitcoin. Social Semiotics, 23(2), 261-277.
Maxwell, D., Speed, C., & Pschetz, L. (2017). Story Blocks: Reimagining narrative through the blockchain. Convergence, 23(1), 79-97.
Meiklejohn, S., Pomarole, M., Jordan, G., Levchenko, K., McCoy, D., Voelker, G. M., & Savage, S. (2013a). A fistful of bitcoins: Characterizing payments among men with no names. Paper presented at the Communications of the ACM, 59(4), 86-93.
Meiklejohn, S., Pomarole, M., Jordan, G., Levchenko, K., McCoy, D., Voelker, G. M., & Savage, S. (2013b). A fistful of bitcoins: Characterizing payments among men with no names. Paper presented at the Proceedings of the ACM SIGCOMM Internet Measurement Conference, IMC, 59(4), 86-93.
Meiklejohn, S., Pomarole, M., Jordan, G., Levchenko, K., McCoy, D., Voelker, G. M., & Savage, S. a. (2013c). A fistful of bitcoins: Characterizing payments among men with no names. Paper presented at the Proceedings of the ACM SIGCOMM Internet Measurement Conference, IMC.
Miller, A., Ari Juels, E. S., Parno, B., & Katz, J. (2014). Permacoin: Repurposing Bitcoin Work for Data Preservation. Paper presented at the Proceedings - IEEE Symposium on Security and Privacy, 475-490.
Mirzayi, S., & Mehrzad, M. (2017). Bitcoin, An SWOT Analysis. 2017 7th International Conference on Computer and Knowledge Engineering, ICCKE 2017, 2017-January, 205-210.
Moore, T., & Christin, N. (2013). Beware the middleman: Empirical analysis of Bitcoin-exchange risk. Paper presented at the Lecture Notes in Computer Science, 7859, 25-33.
Nakamoto, S. (2008). Bitcoin: A Peer-to-Peer Electronic Cash System
O’Driscoll, G. P., Jr. (2018). The future of money. Journal of Private Enterprise, 33(1), 1-7.
Ober, M., Katzenbeisser, S., & Hamacher, K. (2013). Structure and anonymity of the bitcoin transaction graph. Future Internet, 5(2), 237-250.
Polasik, M., Piotrowska, A., Wisniewski, T. P., Kotkowski, R., & Lightfoot, G. (2015). Price Fluctuations and the Use of Bitcoin: An Empirical Inquiry. International Journal of Electronic Commerce, 20(1), 9-49.
Reid, F., & Harrigan, M. (2012). An Analysis of Anonymity in the Bitcoin System. Security and Privacy in Social Networks, 197-223. doi:10.1007/978-1-4614-4139-7_10
Reid, F., & Harrigan, M. (2013). An analysis of anonymity in the bitcoin system.
RON, D., & SHAMIR, A. (2013a). Quantitative Analysis of the Full Bitcoin Transaction Graph. Lecture Notes in Computer Science, 7859, 6-24.
Ron, D., & Shamir, A. (2013b). Quantitative analysis of the full Bitcoin transaction graph. Paper presented at the Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 7859, 6-24.
Sengupta, B., Bag, S., Sakurai, K., & Ruj, S. a. (2016). Retricoin: Bitcoin based on compact proofs of retrievability. ACM International Conference Proceeding Series, 04-07-January-2016. doi:10.1145/2833312.2833317
Small, H. (1973). Co‐citation in the scientific literature: A new measure of the relationship between two documents. Journal of the American Society for Information Science, 24(4), 265-269.
Tschorsch, F., & Scheuermann, B. (2016). Bitcoin and Beyond: A Technical Survey on Decentralized Digital Currencies IEEE COMMUNICATIONS SURVEYS & TUTORIALS, 18(3), 2084-2123.
Urquhart, A. (2016). The inefficiency of Bitcoin. Economics Letters, 148, 80-82.
Van Alstyne, M. (2014). Economic and business dimensions: Why bitcoin has value. Communications of the ACM, 57(5), 30-32.
Wörner, D., Von Bomhard, T., Schreier, Y.-P., & Bilgeri, D. (2016). The bitcoin ecosystem: Disruption beyond financial services? Paper presented at the 24th European Conference on Information Systems, ECIS 2016.
Wörner, D., Von Bomhard, T., Schreier, Y.-P. b., & Bilgeri, D. a. (2016). THE BITCOIN ECOSYSTEM: DISRUPTION BEYOND FINANCIAL SERVICES? . Paper presented at the European Conference on Information Systems.
Wonglimpiyarat, J. (2016). S-curve trajectories of electronic money innovations. Journal of High Technology Management Research, 27(1), 1-9.
Wonglimpiyarat, J. (2016). Technological Change of the Innovation Payment System. International Journal of Innovation and Technology Management, 13(4).
Wool, G. (1998). A meditation on metadata. Serials Librarian, 33(1-2), 167-178.
Yelowitz, A., & Wilson, M. (2015). Characteristics of Bitcoin users: an analysis of Google search data. Economics Letters, 22(13), 1030-1036.
Yuan, Y., & Wang, F.-Y. (2016). Blockchain: The state of the art and future trends. Zidonghua Xuebao/Acta Automatica Sinica, 42(4), 481-494.
Zurich. (2016). The quest for scalable blockchain fabric: Proof-of-work vs. BFT replication. Paper presented at the Lecture Notes in Computer Science, 9591(11), 112-125.
Zyskind, G., Nathan, O., & Pentland, A. S. (2015). Decentralizing privacy: Using blockchain to protect personal data. Paper presented at the Proceedings - 2015 IEEE Security and Privacy Workshops, SPW 2015, 180-184.